@article{fdi:010080627, title = {{M}esopelagic microbial carbon production correlates with diversity across different marine particle fractions}, author = {{B}aumas, {C}. {M}. {J}. and {L}e {M}oigne, {F}. {A}. {C}. and {G}arel, {M}. and {B}hairy, {N}. and {G}uasco, {S}. and {R}iou, {V}. and {A}rmougom, {F}abrice and {G}rossart, {H}. {P}. and {T}amburini, {C}.}, editor = {}, language = {{ENG}}, abstract = {{T}he vertical flux of marine snow particles significantly reduces atmospheric carbon dioxide concentration. {I}n the mesopelagic zone, a large proportion of the organic carbon carried by sinking particles dissipates thereby escaping long term sequestration. {P}article associated prokaryotes are largely responsible for such organic carbon loss. {H}owever, links between this important ecosystem flux and ecological processes such as community development of prokaryotes on different particle fractions (sinking vs. non-sinking) are yet virtually unknown. {T}his prevents accurate predictions of mesopelagic organic carbon loss in response to changing ocean dynamics. {U}sing combined measurements of prokaryotic heterotrophic production rates and species richness in the {N}orth {A}tlantic, we reveal that carbon loss rates and associated microbial richness are drastically different with particle fractions. {O}ur results demonstrate a strong negative correlation between prokaryotic carbon losses and species richness. {S}uch a trend may be related to prokaryotes detaching from fast-sinking particles constantly enriching non-sinking associated communities in the mesopelagic zone. {E}xisting global scale data suggest this negative correlation is a widespread feature of mesopelagic microbes.}, keywords = {}, booktitle = {}, journal = {{ISME} {J}ournal}, volume = {15}, numero = {6}, pages = {1695--1708}, ISSN = {1751-7362}, year = {2021}, DOI = {10.1038/s41396-020-00880-z}, URL = {https://www.documentation.ird.fr/hor/fdi:010080627}, }